How to plot a simple curve fitting in Matlab?

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Ayob
Ayob 2016-1-1
回答： KSSV 2016-1-1
Hi
I'm trying to use Matlab curve fittings. I used X=[1,2,3] and Y=[3,4,5] as known data and the codes introduced below:
f=fit(X,Y,'poly2')
plot(f,X,Y)
But it doesn't work! How should I edit it?

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KSSV
KSSV 2016-1-1
Make X and Y a column vector. Or use f=fit(X',Y','poly2') ;

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